Abstract:
Objectives This work aims to investigate the effect of insulin-like growth factor binding protein 5(IGFBP5) on the proliferation and invasion of human osteosarcoma cells(143B).
Methods The effects of IGFBP5 on the growth, migration, and invasion of osteosarcoma 143B cells were studied.The 143B cell lines were infected with IGFBP5-overexpressing recombinant adenovirus(Ad -IGFBP5) and small interfering RNA-mediated knockdown of IGFBP5 recombinant adenovirus(Ad - silGFBP5).Cell proliferation, cell wound healing assay, and Transwell invasion assay were performed to determine the effect of IGFBP5 on the osteosarcoma cells.
Results Cell proliferation assay and functional analysis revealed that the osteosarcoma cells infected with Ad-IGFBP5 had significantly lower cell growth rates, wound closure rates, and invasiveness compared with the cells in the control group(P < 0.05).Meanwhile, after infection with Ad-siIGFBP5, the cells exhibited the opposite biological effects.
Conclusion IGFBP5 may inhibit the tumorigenesis and metastasis of osteosarcoma.